Editing Kauai (section)

==Energy==
{{main|Kaua{{okina}}i Island Utility Cooperative}}
Kaua{{okina}}i Island Utility Cooperative was formed in November 2002. KIUC operates as a not-for-profit organization that is owned by its members and governed by an elected board of directors. It serves 39,978 meters (electric accounts). Of those, it has 29,000 residential member-owners and 4,000 commercial member-owners. KIUC serves 550 square miles with 1,530 transmission and distribution lines. Its generating capacity is 259.2 megawatts.<ref>{{Cite web |last=Kaua{{okina}}i Island Utility Cooperative |date=April 21, 2025 |title=KIUC: About Us |url=https://kiuc.coop/about-us |url-status=live |access-date=April 21, 2025 |website=KIUC: About Us}}</ref> In 2023, KIUC reported that 57.8% of its electricity came from renewable energy sources. In 2023, the fuel mix by source was 42.1% fossil fuel, 24.7% utility solar, 13.4% customer solar, and 7.8% biomass.<ref>{{Cite web |last=Rockwell |first=Brad |date=May 31, 2024 |title=2023 Annual Renewable Portfolio Standards Status Report |url=https://kiuc.coop/sites/default/files/documents/puc_reports/2023/2023%20Annual%20RPS%20Report.pdf |url-status=live |access-date=April 21, 2025 |website=KIUC Renewable Portfolio}}</ref> KIUC is headquartered in [[Lihue, Hawaii|Līhu{{okina}}e]].<ref>{{Cite web |url=https://website.kiuc.coop/ |title=Home &#124; Kauai Island Utility Cooperative |website=website.kiuc.coop |access-date=2021-06-10 |archive-date=2021-06-17 |archive-url=https://web.archive.org/web/20210617033139/https://website.kiuc.coop/ |url-status=live}}</ref>

In the 1970s, Kaua{{okina}}i burned [[sugarcane]] waste to supply most<ref name="auto1">{{cite web |url=https://www.upi.com/Archives/1980/10/07/Hawaiis-sugar-growers-are-putting-new-emphasis-on-their/2908339739200/ |title=Hawaii's sugar growers are putting new emphasis on their... |publisher=United Press International |accessdate=29 July 2021 |archive-date=29 July 2021 |archive-url=https://web.archive.org/web/20210729061804/https://www.upi.com/Archives/1980/10/07/Hawaiis-sugar-growers-are-putting-new-emphasis-on-their/2908339739200/ |url-status=live}}</ref> of its electricity.<ref name="auto1" />

By 2008, transition of energy sources and growth in generating capacity had occurred, with most of Kaua{{okina}}i's electricity produced by imported liquid [[petroleum]]. In 2006 and 2007, the inputs cost $69.3&nbsp;million and $83&nbsp;million, respectively.<ref>Flynn, Meghan. [https://web.archive.org/web/20110710192458/http://www.energytodaymagazine.com/index.php?option=com_content&task=view&id=6869&Itemid=80 Kauai Island Utility Cooperative.] ''Energy Today Magazine.'' September 30, 2008</ref> By 2011, 92% of KIUC's power came from diesel.<ref name="Wagman">{{cite web |url=https://spectrum.ieee.org/tesla-teams-with-tiny-hawaiian-utility-to-store-solar |title=Tesla Teams With Tiny Hawaiian Utility to Store Solar |publisher=IEEE |first=David |last=Wagman |date=16 March 2017 |access-date=29 March 2017 |quote=as 2011 we were 92% dependent on fossil fuel generation,” primarily diesel and naphtha. |archive-date=30 March 2017 |archive-url=https://web.archive.org/web/20170330090014/http://spectrum.ieee.org/energywise/energy/renewables/tesla-teams-with-tiny-hawaiian-utility-to-store-solar |url-status=live}}</ref>

By 2017, KIUC's fuel mix was 56% [[fossil fuel]]s, 9% [[hydroelectric]], 12% biomass and 23% [[solar power|solar]]. KIUC integrated large-scale solar into its grid so that, during sunny daylight hours, 97% or more of its generation came from renewable sources. KIUC offers $1,000 rebates to residential customers who have [[solar water heating]] systems installed on their homes.<ref>{{cite web |url=https://website.kiuc.coop/sites/kiuc/files/documents/inserts/yellow-Residential-HeatPumpRebate.pdf |title=Residential Heat Pump Water Heater Rebate |publisher=Kaua'i Island Utility Cooperative |accessdate=29 July 2021 |archive-date=29 July 2021 |archive-url=https://web.archive.org/web/20210729060650/https://website.kiuc.coop/sites/kiuc/files/documents/inserts/yellow-Residential-HeatPumpRebate.pdf |url-status=live}}</ref>

In 2017, KIUC opened a Tesla Energy 13 MW / 52 [[MWh]] battery next to the 12 MW Kapaia solar plant<ref>{{cite web |url=https://electrek.co/2017/03/08/tesla-powerpack-2-project-hawaii-kauai-solar-power/ |title=Tesla launches its Powerpack 2 project in Hawaii, will help Island of Kauai get more out of its solar power |date=March 8, 2017 |access-date=March 8, 2017 |archive-date=March 8, 2017 |archive-url=https://web.archive.org/web/20170308234443/https://electrek.co/2017/03/08/tesla-powerpack-2-project-hawaii-kauai-solar-power/ |url-status=live}}</ref> for 13.9¢/kWh.<ref name=Wagman/> In December 2018, KIUC opened an AES Distributed Energy project for 20 MW solar with 20 MW / 100 MWh batteries priced at 11.1¢/kWh.<ref name=gtm-kauai>{{cite web |url=https://www.greentechmedia.com/articles/read/aes-puts-energy-heavy-battery-behind-new-kauai-solar-peaker |title=AES' New Kauai Solar-Storage 'Peaker' Shows How Fast Battery Costs Are Falling |date=January 16, 2017 |access-date=January 24, 2017 |archive-date=January 18, 2017 |archive-url=https://web.archive.org/web/20170118024407/https://www.greentechmedia.com/articles/read/aes-puts-energy-heavy-battery-behind-new-kauai-solar-peaker |url-status=live}}</ref>